NXP Semiconductors S32K312NHT0VPASR

Overview

S32K312NHT0VPASR from NXP Semiconductors is an ASIL-B automotive-grade 32-bit Arm Cortex-M7 microcontroller operating up to 120 MHz, featuring 2 MB program flash with ECC, 256 KB SRAM (including 96 KB TCM), and support for CAN FD, FlexIO, and QuadSPI. It targets body control modules, gateway ECUs, and chassis domain controllers in harsh-temperature automotive environments.

For engineers reviewing the S32K312NHT0VPASR datasheet, S32K312NHT0VPASR pinout, S32K312NHT0VPASR application, or S32K312NHT0VPASR equivalent, key selection criteria include its 120 MHz Cortex-M7 core with FPU/DSP, -40 °C to 125 °C ambient operation, dual-core-capable pin-compatible footprint, integrated safety mechanisms (ECC, SWT, XRDC), and automotive network interface density (up to 12 FlexCAN channels).

Technical Context

The S32K312NHT0VPASR implements a single Arm Cortex-M7 core executing at up to 120 MHz with Thumb®-2 ISA, single-precision FPU, and DSP extensions. Its memory subsystem includes ECC-protected 2 MB flash, 256 KB SRAM (96 KB TCM), instruction/data caches, and QuadSPI interface supporting external memory expansion.

Timing and control are managed via three eMIOS modules (72 timer channels), two STM modules, BCTU for ADC/timer cross-triggering, and TRGMUX. Safety architecture incorporates HSE-B security engine (excluding AES acceleration), dual SWT timers, ECC on all memories, CRC module, and XRDC-based access control.

Key Specifications

Pinout & Package

S32K312NHT0VPASR is packaged in a 172-pin HDQFP with exposed pad (EP), optimized for thermal dissipation in automotive PCB layouts and compatible with standard reflow profiles.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar automotive microcontroller applications.

Compared with S32K311NHT0VPASR, the S32K312NHT0VPASR adds 1 MB flash and 128 KB SRAM for robust OTA and diagnostics; versus S32K314NHT0VPASR, it trades memory headroom for tighter cost control while retaining identical safety architecture and network interface density.

Availability

S32K312NHT0VPASR is available at Aetrix Electronics and suitable for automotive body control modules, vehicle gateway ECUs, and chassis domain controllers requiring stable component supply, long-term lifecycle support, and ASIL-B-certified silicon.

Supply support for S32K312NHT0VPASR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

NXP Semiconductors is a global semiconductor leader specializing in secure connectivity solutions for automotive, industrial, and IoT markets, with deep expertise in functional safety and automotive-grade reliability.

The S32K3xx product line was designed specifically for next-generation automotive electronic control units, emphasizing ASIL-B/D compliance, heterogeneous network integration (CAN FD, Ethernet, FlexIO), and scalable real-time performance across single/dual/lockstep core configurations.

FAQ

What is the maximum operating frequency of the S32K312NHT0VPASR?

The S32K312NHT0VPASR operates at a maximum CPU frequency of 120 MHz using its Arm Cortex-M7 core. This speed is achieved with the System PLL and supported by the FIRC (48 MHz) and FXOSC (8–40 MHz) clock sources. The S32K312NHT0VPASR maintains this performance across its full -40 °C to 125 °C ambient temperature range while delivering deterministic real-time behavior through its 96 KB TCM and zero-wait-state cache architecture.

Does the S32K312NHT0VPASR support CAN FD?

Yes, the S32K312NHT0VPASR supports CAN FD on all its FlexCAN modules, enabling data rates up to 5 Mbps and payloads up to 64 bytes per frame. This capability is implemented in hardware and requires no external transceivers beyond standard ISO 11898-2 compliant devices. The S32K312NHT0VPASR uses the same CAN FD controller IP block found across the S32K3xx family, ensuring consistent driver stack reuse and interoperability with other S32K3xx variants.

What safety certifications apply to the S32K312NHT0VPASR?

The S32K312NHT0VPASR is certified to ASIL-B per ISO 26262, with built-in safety mechanisms including ECC on all memories, dual independent software watchdog timers (SWT), centralized error detection (CED), and XRDC-based memory access control. It does not include the AES accelerator found in K388/K389 variants, but retains full HSE-B functionality for secure boot, key management, and cryptographic operations required for ASIL-B applications such as body control and gateway functions.

Which package type is used for the S32K312NHT0VPASR?

The S32K312NHT0VPASR uses the HDQFP172 package - a 172-pin heat-dissipating quad flat package with exposed pad (EP). This package is pin-compatible with other S32K3xx devices in the same footprint family, including S32K311 and S32K314, enabling scalable design reuse. The exposed pad improves thermal performance in automotive under-hood environments and supports standard IPC-compliant PCB layout practices.

How much SRAM and flash memory does the S32K312NHT0VPASR include?

The S32K312NHT0VPASR integrates 2 MB of program flash memory with end-to-end ECC protection and 256 KB of SRAM - of which 96 KB is designated as Tightly Coupled Memory (TCM) for ultra-low-latency CPU access. The remaining 160 KB SRAM supports general-purpose data storage and stack usage. All memory blocks implement ECC to detect and correct single-bit errors, meeting ASIL-B requirements for memory integrity in automotive applications.